Two speakers face each other, and they each emit a sound of wavelength λ. one speaker is 180∘ out of phase with respect to the other. if we separate the speakers by a distance 1.5λ, how far from the left-most speaker should we place a microphone in order to pick up the loudest sound? ignore reflections from nearby surfaces. select all that apply..
a) 1/4λ.
b) λ. c
) 0λ.
d) 1/2 λ. e) 3/4 λ.

Explain the consequences of this addiction to the brain tissue

Arotating space station is said to create “artificial gravity”—a loosely-defined term used for an acceleration that would be crudely similar to gravity. the outer wall of the rotating space station would become a floor for the astronauts, and centripetal acceleration supplied by the floor would allow astronauts to exercise and maintain muscle and bone strength more naturally than in non-rotating space environments. if the space station is 200 m in diameter, what angular velocity would produce an “artificial gravity” of 9.80 m/s^{2} 2 at the rim?

Several mountains together form a mountain . a few of these combined form a mountain system. several systems combined form a mountain , which can stretch thousands of miles in length.